Page 64 - Abstract book - TJSSF-2020

Thailand – Japan Student Science Fair 2020 (TJ-SSF 2020)
“Seeding Innovations through Fostering Thailand – Japan Youth Friendship”

What do jell coats have that Steinberg’s solution does not?

Akari Kageoka , Yuri Yasuda
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Advisor: Genkuro Hashioka
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Notre Dame Seishin Gakuen Seishin Girls’ High School
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Abstract
We have been researching the differences between Steinberg’s solution (100%) and the jell coats which
protect the eggs of fire belly newts. Steinberg solution (100%), which keeps the same osmotic pressure,
is what we use when we remove the jell coats from eggs. However, in previous research almost all the
eggs put in Steinberg’s solution died, though they did not in jell coats. We thought there was a problem
with Steinberg solution. We hypothesized jell coats have something that Steinberg’s solution does not.
We decided to find out what that was. After we obtained newts’ eggs, we divided them into two groups:
one group for jell coats and the other one for Steinberg’s solution. We observed them for eight days but
only few of them developed and all of the others died. We have discussed why it happened and what
we can do for next. The spawning season is over now so we are trying to do something that does not
require many eggs.

Keywords: Steinberg’s solution, jell coats, osmotic pressure

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